Machine for rectifying electrotypes.



W. W. MGGARROLL.

MACHINE FOR RBOTIFYING ELEGTROTYPBS.

APPLICATION FILED APR.6, 1911.

Patented Sept. 8, 1914 2 SHEETS-SHBET 1.

W. W. MGGARROLL. MACHINE FOR REOTIFYING ELEGTBOTYPBS.

APPLICATION IIL ED APRHG, 1911 2 SHEETS-SHBET 2 Patented Sept. 8, 1914.

Mr! NOR/01h m rum 0 0mm) rum: w/LmINum/v. II I sidewise of the machine to bring the proper tool over the hammer rod 38 in the center of the machine. To further the positioning of the tools there is provided a pointer ,39 representing the central vertical axis of the machine and which is carried by a sleeve 40- on the upright weighted member 41. The rod 22 passes through the sleeve 40 permitting the operating of the tool and glass slides independent of the member 41 as will be understood. The hammer rod 38 is posi-' tioned centrally of the machine but may be moved forward or backward to register with any one of the three rows of tools as will be understood from Fig. 2. The adjustment of the hammer rod is accomplished by means of a pivoted lever 42 the one end of which is pivoted to a bearing block 43 through which the hammer rod passes. The other end of said lever 42 is pivoted to a rod 44 having a handle 45. By pulling the handle in or out of the setting block 46 the hammer rod is adjusted. The setting block 46 may be of the construction shown in Fig. 7. The rod 44 passes through the block and has notches adapted to engage a pin 47. A spring seated pin 48 presses the rod 44 against said pin 47. Thus the hammer rod is set for each row of tools by simply'pulling the rod 44 to cause the pin 47 to engage a particular notch; 49 is a bearing for the lower end of the hammer rod and the latter may be provided at the top and bottom with removable soft steel heads 50. The hammer rod is supported in the bifurcated end 51 of a pressure arm 52 journaled by means of an eccentric 53 on a shaft 54 upon which is fast a pulley 55. 56 is a cam roll 011 the arm 52. The end 51 rests on a lug 57 fast on a rod 58, an adjusting screw 59 being interposed between the-arm 52 and the said lug. A spring 60 iscoiled around the hammer rod and the upper end of said spring engages an ad usting nut 61. The

hammer rod is used to put a pressure on thetools 28 before the hammer is operated with the advantage that a slight blow of the hammer will suffice for the operation of the tool, so that in the operation of-the machine the noise and wear is considerably reduced, and the impressions of the tools on the electrotypes by the hammerblows may be better adjusted.

The operation of the hammer arm and the hammer rod is accomplished by the following means: 62 represents a constantly rotating shaft to which power may be applied in any suitable manner. 63 is a cam fast in the shaft and adapted to engage the aforesaid cam roll 56. On the shaft 62 is further mounted an arm bearing to one side the hammer 64, to the other side a hammer spring 65 engaging an adjustable spring block 66. By adjusting the latter the tension of the spring 65 may be varied. 67 is a trip arm loosely mounted on the shaft 62 and suitably connected to a pulley 68 so that the two move together. The trip arm carries a trip shoe 69 and a link 7 O. The pul ley 68 is connected by a cable 71 to the pulley 55. A spring 83 pulls on the pulley 55 to keep the same normally in the posit-ion shown in Fig. l. The link 7 O'is engaged by the treadle7 2 pivoted at 17 2. 73 is an adjustable weight on the treadle and 74 is a loo-p on the end of the link so that the first upward movement of'the'treadle does not affect the link. 7 is atreadleshoefor adjusting the distance ofrdepression of the treadle. The treadle shoe is operatedfrom levers 76 one of which passes through settingblock 77 similar to the block 46." 78 is the hammer trip which is carriedin the cam 63see Fig. 6and.has a projection 79 to the one side to engage thelug 82 on the hammer 64 and a projection to :the opposite side to be engaged by the trip shoe 69r The hammer trip slides radially in :the-cam-63 and is held inwardly by a spring :81. on the shaft 62 isfasta cam 84 on whichrun two cam rolls, 85, 85 carried by a fork 86 to which is secured a rod'87 bearing adjusting nuts 88 at the upper end which passes through the, operating arm 89 pivoted at 90 and whicn engages the weighted member 41. The arm 89 is normally held at rest by a stop 91 see Fig.7 8engaging a set screw 92 in the arm. The stop '91 is carried by a short shaft 93 which may be rocked by a cable 94 connected to the treadle 72 to move the stop from under the set screw 92. A

spring 193 normally keeps the stop 91 verthe nuts 88-see Fig. 9. The said block is adapted to slide upon the inclined surface 97 of the arm 89 and is provided with gradua-v tions to register with a mark on the arm.

The block is operated by rotating a shaft 98 which mav be locked by a clamping nut 99. A nut 100 on the shaft 98 permits of adjustment in fractions of the distance between two register marks on the slide 96.

Before commencing the operation of the machine the operator adjusts the various elements according to the thickness of the electrotype and the character of the work to be performed. The stroke of the glassblock is adjusted sothat the block will just touch the surface of the electrotype in. advance of the blow from the hammer. This adjustment is made by operatingthe slide block 96,

the set screw 92 in the arm 89 and the tension of the spring 194 may be varied by turning the nuts and 88. The treadle shoe '75 is set so as to permit a certain de-v pression of the treadle 72 which in turn sets the trip shoe 69. the position of coking halbiig the same.

further clep 0e Willperini h in turn rotates; the tricll53 Wh 1111 cam r011 the pf iipw thefl the glass for constru 61 tools, a rotating member adapted to' engage the hammer to move the same away from the hammer rod, means for tripping the said rotating member to. release the said hammer and a spring for actuating the latter.

3. The combination of 'a plurality of recfor actuating the said hammer to strike an upward blow.

4. The combination of a glass block, a

lever for reciprocating the same vertically,

means for adjusting the stroke of the said lever at both ends thereof, rectifying tools supported below the said glass, means for "Copies of this patent may be obtained for'five cents each; by addressing the Commissioner of Patents. 3

April, 1911.

5. The combination of a glass block, means for operating the same, a plurality of "rectifying tools, a hammer for operating any, one ofthe said toolsaga inst the said 25 glassga movablemember for operating the saidhammer away from the said tools,

means for tripping the said movable member to' release the said hammer and a spring for actuating the latter.

3O Signed at New York, N. Y. this 3 day of WALKER W. ,MCCARROLL. Witnesses: M 1 g IVAN Komosnnnmg K. Gr. LEARD.

Washington, I). 0. 

